If you are looking for Tea Polyphenols(Catechins and Theaflavins) for your cosmetic, pharmaceutical or nutritional production, we are at your disposal for any information request. We are a phytochemical company specialized in the extraction of Tea ingredients and various other ingredients from plants. We can not only supply the high purity reference substance for R&D and QC,but also can supply ingredients for industial production.
Catechins constitute about 25% of the dry weight of fresh tea leaf, although total catechin content varies widely depending on species, clonal variation, growing location, season, light variation, and altitude. They are present in nearly all teas made from Camellia sinensis, including white tea, green tea, black tea and oolong tea.
Catechin monomer structures are metabolized into dimers theaflavins and oligomers thearubigins with increasing degrees of oxidation of tea leaves. Theaflavins directly contribute to the bitterness and astringency of steeped black tea.The mean amount of theaflavins in a cup of black tea (200 ml) is 12.18 mg. Four main types of theaflavins are found in black tea, namely theaflavin (TF-1), theaflavin-3-gallate (TF-2), and theaflavin-3,3'-digallate (TF-3),theaflavin-3'-gallate (TF-4).
Today, cosmetic and pharmaceutical industrialists are the major customers of Tea Polyphenols. Our knowledge in phytochemicals, together with the quality of our Tea Polyphenols , helped us create a worldwide reputation in the field of phytochemicals extraction.